At the core of every Fridge-to-go® is our patented Cooling Technology. Our SURROUND COOLING Technology is used throughout our entire product line. SURROUND COOLING means your getting the performance you need to keep the contents of each Fridge-to-goR cold for a full day away from home. SURROUND COOLING also means that when you place room temperature food & drink inside a fully recharged Fridge-to-go®, that is will take less than 2 hours to chill it, working just like your home refrigerator would, sometimes outperforming it!